{"dataType":"CVE_RECORD","cveMetadata":{"cveId":"CVE-2024-26615","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-02-19T14:20:24.131Z","datePublished":"2024-02-29T15:52:18.843Z","dateUpdated":"2025-05-04T08:52:21.717Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2025-05-04T08:52:21.717Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/smc: fix illegal rmb_desc access in SMC-D connection dump\n\nA crash was found when dumping SMC-D connections. It can be reproduced\nby following steps:\n\n- run nginx/wrk test:\n  smc_run nginx\n  smc_run wrk -t 16 -c 1000 -d <duration> -H 'Connection: Close' <URL>\n\n- continuously dump SMC-D connections in parallel:\n  watch -n 1 'smcss -D'\n\n BUG: kernel NULL pointer dereference, address: 0000000000000030\n CPU: 2 PID: 7204 Comm: smcss Kdump: loaded Tainted: G\tE      6.7.0+ #55\n RIP: 0010:__smc_diag_dump.constprop.0+0x5e5/0x620 [smc_diag]\n Call Trace:\n  <TASK>\n  ? __die+0x24/0x70\n  ? page_fault_oops+0x66/0x150\n  ? exc_page_fault+0x69/0x140\n  ? asm_exc_page_fault+0x26/0x30\n  ? __smc_diag_dump.constprop.0+0x5e5/0x620 [smc_diag]\n  ? __kmalloc_node_track_caller+0x35d/0x430\n  ? __alloc_skb+0x77/0x170\n  smc_diag_dump_proto+0xd0/0xf0 [smc_diag]\n  smc_diag_dump+0x26/0x60 [smc_diag]\n  netlink_dump+0x19f/0x320\n  __netlink_dump_start+0x1dc/0x300\n  smc_diag_handler_dump+0x6a/0x80 [smc_diag]\n  ? __pfx_smc_diag_dump+0x10/0x10 [smc_diag]\n  sock_diag_rcv_msg+0x121/0x140\n  ? __pfx_sock_diag_rcv_msg+0x10/0x10\n  netlink_rcv_skb+0x5a/0x110\n  sock_diag_rcv+0x28/0x40\n  netlink_unicast+0x22a/0x330\n  netlink_sendmsg+0x1f8/0x420\n  __sock_sendmsg+0xb0/0xc0\n  ____sys_sendmsg+0x24e/0x300\n  ? copy_msghdr_from_user+0x62/0x80\n  ___sys_sendmsg+0x7c/0xd0\n  ? __do_fault+0x34/0x160\n  ? do_read_fault+0x5f/0x100\n  ? do_fault+0xb0/0x110\n  ? __handle_mm_fault+0x2b0/0x6c0\n  __sys_sendmsg+0x4d/0x80\n  do_syscall_64+0x69/0x180\n  entry_SYSCALL_64_after_hwframe+0x6e/0x76\n\nIt is possible that the connection is in process of being established\nwhen we dump it. Assumed that the connection has been registered in a\nlink group by smc_conn_create() but the rmb_desc has not yet been\ninitialized by smc_buf_create(), thus causing the illegal access to\nconn->rmb_desc. So fix it by checking before dump."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/smc/smc_diag.c"],"versions":[{"version":"4b1b7d3b30a6d32ac1a1dcede284e76ef8a8542d","lessThan":"27aea64838914c6122db5b8bd4bed865c9736f22","status":"affected","versionType":"git"},{"version":"4b1b7d3b30a6d32ac1a1dcede284e76ef8a8542d","lessThan":"1fea9969b81c67d0cb1611d1b8b7d19049d937be","status":"affected","versionType":"git"},{"version":"4b1b7d3b30a6d32ac1a1dcede284e76ef8a8542d","lessThan":"5fed92ca32eafbfae8b6bee8ca34cca71c6a8b6d","status":"affected","versionType":"git"},{"version":"4b1b7d3b30a6d32ac1a1dcede284e76ef8a8542d","lessThan":"68b888d51ac82f2b96bf5e077a31d76afcdef25a","status":"affected","versionType":"git"},{"version":"4b1b7d3b30a6d32ac1a1dcede284e76ef8a8542d","lessThan":"6994dba06321e3c48fdad0ba796a063d9d82183a","status":"affected","versionType":"git"},{"version":"4b1b7d3b30a6d32ac1a1dcede284e76ef8a8542d","lessThan":"a164c2922675d7051805cdaf2b07daffe44f20d9","status":"affected","versionType":"git"},{"version":"4b1b7d3b30a6d32ac1a1dcede284e76ef8a8542d","lessThan":"8f3f9186e5bb96a9c9654c41653210e3ea7e48a6","status":"affected","versionType":"git"},{"version":"4b1b7d3b30a6d32ac1a1dcede284e76ef8a8542d","lessThan":"dbc153fd3c142909e564bb256da087e13fbf239c","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/smc/smc_diag.c"],"versions":[{"version":"4.19","status":"affected"},{"version":"0","lessThan":"4.19","status":"unaffected","versionType":"semver"},{"version":"4.19.307","lessThanOrEqual":"4.19.*","status":"unaffected","versionType":"semver"},{"version":"5.4.269","lessThanOrEqual":"5.4.*","status":"unaffected","versionType":"semver"},{"version":"5.10.210","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.149","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.76","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.15","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.7.3","lessThanOrEqual":"6.7.*","status":"unaffected","versionType":"semver"},{"version":"6.8","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"4.19.307"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"5.4.269"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"5.10.210"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"5.15.149"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"6.1.76"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"6.6.15"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"6.7.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"6.8"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/27aea64838914c6122db5b8bd4bed865c9736f22"},{"url":"https://git.kernel.org/stable/c/1fea9969b81c67d0cb1611d1b8b7d19049d937be"},{"url":"https://git.kernel.org/stable/c/5fed92ca32eafbfae8b6bee8ca34cca71c6a8b6d"},{"url":"https://git.kernel.org/stable/c/68b888d51ac82f2b96bf5e077a31d76afcdef25a"},{"url":"https://git.kernel.org/stable/c/6994dba06321e3c48fdad0ba796a063d9d82183a"},{"url":"https://git.kernel.org/stable/c/a164c2922675d7051805cdaf2b07daffe44f20d9"},{"url":"https://git.kernel.org/stable/c/8f3f9186e5bb96a9c9654c41653210e3ea7e48a6"},{"url":"https://git.kernel.org/stable/c/dbc153fd3c142909e564bb256da087e13fbf239c"}],"title":"net/smc: fix illegal rmb_desc access in SMC-D connection dump","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-02T00:07:19.717Z"},"title":"CVE Program 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